[SourceCode]

pawn Code:

stock GetWeek(d,m,y) //by drakins,thanks vine 
{ 
    m=(m-=2); 
    if(m<=0) --y,m+=12; 
    return ( (( 
        (d+((13*m-1)/5)+(y%100)+((y%100)/4)+(((y%100)%100)/4)-2*(y%100))%7) == 0)? 
        (((d+((13*m-1)/5)+(y%100)+((y%100)/4)+(((y%100)%100)/4 
        )-2*(y%100))%7) + 1) : (((d+((13*m-1)/5)+(y%100)+((y%100)/4)+ 
        (((y%100)%100)/4)-2*(y%100))%7) 
    ) ); 
}

Quote:

#define GetWeek() ((getdate() % 0x7) + 0x6)